Call it progress, like the days when low frequency radio ranges (LFR) were being replaced by a network of VHF omnidirectional ranges. Sure; the VORs were far more precise but still a long leap of faith for airmen. Or how about the first pilots to descend their planes into thick clouds and/or rain squalls while watching a couple little instruments on the console; ending up relieved and amazed, just 200 feet above the surface, with the runway in sight. They all must have experienced the trepidation of change; as I would over the advent of "NextGen." Fickle though it was, I did love my radar. We worked a lot of planes together, moved millions of people and even saved some lives. We kept each other company during those long, tail-end hours of every mid-shift; when my frequencies were silent and radar's eye saw nothing but empty sky. There were a few brief separations but, as we know, the lack of something we love and rely on serves to intensify our desire for it. I know this to be true and have the gray hairs to prove it.
GCA trailers can also be installed semi-permanently on a large turntable and rotated whenever the wind dictates a change in landing direction. Whether rolled or spun, the unit must be re-aligned whenever it is moved. At my Base, radar reflectors, which looked similar to satellite dishes, were mounted at each end of the runway. Whenever the unit was turned around, the display had to be re-calibrated to align perfectly with the reflector. Chances are the GCA might have shifted a little during the turn but that reflector was always in the same place. They were permanent echos, at a known range and azimuth. Alignment could be tricky but if you didn't do it correctly; the next precision radar approach you conducted could end up heading for the base housing area or worse. The Airman's Club, with all its cold beer, was out there somewhere.
Those radar scopes needed a relatively dark room. Light, even a modest amount, would bleach out the display; making it nearly impossible to see what was happening. If you came into the TRACON and saw all the lights on; it was either very late at night, when the janitor did his cleaning, or the radar had failed. If the room was quiet, you could assume the former. Assume the latter if there was a lot of noise and commotion. No, the controllers wouldn't be the ones causing all the stir. It would be the shift management. One Supervisor might be talking to a departure sector at the center. "Do you see Lear five eight alfa, ten east of Big Time, leaving seven thousand?" The answer; "Yeah, he's radar. Climb him to twelve and switch him." Another Supe would be pumping one of the radar technicians for answers about what went wrong and how long it would take to fix. Above it all, the Area Manager would be terminating one discussion with the Regional Office and starting another with the Command Center. But how about the controllers? What happened during those first few minutes after the radar quit?
Now the departures, stalled on ramps and taxiways, were stopped indefinitely. This was not the time to be in the tower working Ground Control. At times like this; you were liable to hear the dark side of a few otherwise affable and professional pilots who suddenly found themselves stranded; up a creek without a prognosis.
Some controllers were meticulous about their strip marking and could recover from radar loss fairly quickly. Some tried their best but would get so busy they'd forget to keep their strips updated. Like me; they relied heavily on their habits and past practices to fill in the blanks. For others; strips were merely a distraction that diverted their attention away from the traffic. They were the ones voted most likely to shake, sweat and swear when the radar stopped spinning. Even if the radar was running, problems could arise when it came time to relieve one of those guys. But if the radar was out? Inherit the sector and, for better or worse, you also inherit the outgoing controller's flight progress strips.
My first unexpected radar failure occurred while I was working an arrival sector, in the middle of a moderately flurry of inbounds. My display flickered a few times then, just as radar's eye swept past the 'seven o'clock' position, it went dark. Everyone in the room gasped and studied their strips; hoping it was simply a 'blink' rather than an extended outage. I had seven or eight planes on vectors at the time but there were more coming. Fear, hope and despair kicked in immediately but there was no time to deal with it. I gave my traffic the bad news, advised them that radar contact had been lost then called my adjacent center sector to break the news. They'd have to hold whatever was headed my way. I climbed or descended some of my planes to get a little altitude separation then reached above the console to grab a copy of Big Time's non-radar "cheat sheet." This included a set of maps showing non-radar (pilot navigation) routes from our outer fixes to the approach in use, timed approach procedures, some unpublished holding patterns where we could hide a few airplanes till the dust settled and other information we couldn't remember due to its infrequent need. Everyone on the frequency got a new clearance limit, along with some detailed holding instructions, while we sorted this thing out. I may also have pooped myself but, through the miracle of selective memory, I prefer to forget certain things.
Radar returned in about 45 minutes but we controllers learned long ago to not jump right back into a 'business as usual' operation. Traffic was resumed tentatively; as though we expected radar's recrudescence to be temporary - a sucker play. Our confidence in the system had to be regained before we could get back into the furious radar operation we used to move so much traffic with.
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| "We've got a thing that's called radar love. We've got a line in the sky, radar love." Golden Earring - 1973 |
